Binary betting - FTSE / Dow

This is a discussion on Binary betting - FTSE / Dow within the Fixed Odds forums, part of the Commercial category; BlueSq(107% o/r) and Paddy Power (109% o/r) also offer fixed odds on daily financial indices.
13-15% is a typical overround ...

I've been SB with capital Spreads for nearly three years now and I've had my ups and downs, but during the last 9 months I've turned a corner, as it were. I bet the FTSE in general and I like to add by how much it will rise or fall. Very bold of me, but hay ho.

My question is, is there any web site / company out there in the big WWW abis that allows betting on how much the FTSE will rise/fall, ie: 10, 20, 50pts etc. I think they call it 'Spot Trading.' You win if it hits your prediction in a set time frame and lose if it doesn't, but without the option of marginal winning/loosing, ie: if you bet the FTSE will rise/hit 25pts and it hits 20pts you still gain.